PLUG

SEC source: 0001104659-21-108698 · tm2125715-4_4seq1.xml · nonDerivative · entry 2

Schmid Keith · CIK 0001590336 · COO & Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 399,942

F2 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock unit awards.

SEC source: 0001104659-21-108698 · tm2125715-4_4seq1.xml · nonDerivative · entry 1

Schmid Keith · CIK 0001590336 · COO & Sr. VP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 439,554

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-21-108696 · tm2125715-3_4seq1.xml · derivative · entry 3

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 216,667

Underlying: Common Stock · 216,666 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F3 · derivative.exercise_date: On August 19, 2019, the Reporting Person was granted 650,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: On August 19, 2019, the Reporting Person was granted 650,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-21-108696 · tm2125715-3_4seq1.xml · nonDerivative · entry 2

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 860,977

F2 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock unit awards.

SEC source: 0001104659-21-108696 · tm2125715-3_4seq1.xml · nonDerivative · entry 1

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 965,346

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-21-108695 · tm2125715-2_4seq1.xml · derivative · entry 3

Hull Martin Daniel · CIK 0001637696 · Corporate Controller and CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,667

Underlying: Common Stock · 16,666 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F3 · derivative.exercise_date: On August 19, 2019, the Reporting Person was granted 50,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: On August 19, 2019, the Reporting Person was granted 50,000 restricted stock units, vesting in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001104659-21-108695 · tm2125715-2_4seq1.xml · nonDerivative · entry 2

Hull Martin Daniel · CIK 0001637696 · Corporate Controller and CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,774

F2 · kind: Tendered to Issuer to satisfy tax withholding obligations of the Reporting Person incurred in connection with the vesting of the Reporting Person's restricted stock unit awards.

SEC source: 0001104659-21-108695 · tm2125715-2_4seq1.xml · nonDerivative · entry 1

Hull Martin Daniel · CIK 0001637696 · Corporate Controller and CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,666

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-21-107839 · tm2125370-4_4seq1.xml · derivative · entry 3

MCNAMEE GEORGE C · CIK 0001008001 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F3 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan.

F4 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107839 · tm2125370-4_4seq1.xml · nonDerivative · entry 1

MCNAMEE GEORGE C · CIK 0001008001 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 604,800

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107844 · tm2125370-8_4seq1.xml · derivative · entry 2

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F2 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan.

F3 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107844 · tm2125370-8_4seq1.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 416,316

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107842 · tm2125370-7_4seq1.xml · derivative · entry 2

Silver Jonathan M · CIK 0001745274 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F2 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan.

F3 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107842 · tm2125370-7_4seq1.xml · nonDerivative · entry 1

Silver Jonathan M · CIK 0001745274 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,298

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107840 · tm2125370-5_4seq1.xml · derivative · entry 2

Roth Johannes Minho · CIK 0001590334 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F2 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan.

F3 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107840 · tm2125370-5_4seq1.xml · nonDerivative · entry 1

Roth Johannes Minho · CIK 0001590334 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 232,552

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107837 · tm2125370d2_4seq1.xml · derivative · entry 2

HELMER MAUREEN O · CIK 0001279977 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F2 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan.

F3 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107837 · tm2125370d2_4seq1.xml · nonDerivative · entry 1

HELMER MAUREEN O · CIK 0001279977 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,727

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107841 · tm2125370d6_4seq1.xml · derivative · entry 2

Schneider Lucas P · CIK 0001702795 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F2 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan

F3 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107841 · tm2125370d6_4seq1.xml · nonDerivative · entry 1

Schneider Lucas P · CIK 0001702795 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 125,342

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107838 · tm2125370-3_4seq1.xml · derivative · entry 2

Kenausis Gregory · CIK 0001590994 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F2 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan.

F3 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107838 · tm2125370-3_4seq1.xml · nonDerivative · entry 1

Kenausis Gregory · CIK 0001590994 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,443

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107836 · tm2125370-1_4seq1.xml · derivative · entry 2

Harriman Kim · CIK 0001847319 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 4,482 shares

Expires 2031-08-16

F2 · security: Stock option granted pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan.

F3 · derivative.exercise_date: The options shall vest (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-107836 · tm2125370-1_4seq1.xml · nonDerivative · entry 1

Harriman Kim · CIK 0001847319 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,878

F1 · shares: Consists of a restricted stock award made pursuant to Plug Power's 2021 Stock Option and Incentive Plan in accordance with the Non-Employee Director Compensation Plan. The restricted stock vests (100%) on the first anniversary of the grant date.

SEC source: 0001104659-21-094579 · tm2122379-9_4seq1.xml · nonDerivative · entry 2

Harriman Kim · CIK 0001847319 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 396

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094579 · tm2122379-9_4seq1.xml · nonDerivative · entry 1

Harriman Kim · CIK 0001847319 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 122

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094574 · tm2122379-6_4seq1.xml · nonDerivative · entry 2

MCNAMEE GEORGE C · CIK 0001008001 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 600,318

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094574 · tm2122379-6_4seq1.xml · nonDerivative · entry 1

MCNAMEE GEORGE C · CIK 0001008001 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 599,843

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094580 · tm2122379-2_4seq1.xml · nonDerivative · entry 2

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 411,834

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094580 · tm2122379-2_4seq1.xml · nonDerivative · entry 1

WILLIS GARY K · CIK 0001121475 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 411,505

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094577 · tm2122379-8_4seq1.xml · nonDerivative · entry 2

HELMER MAUREEN O · CIK 0001279977 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,245

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094577 · tm2122379-8_4seq1.xml · nonDerivative · entry 1

HELMER MAUREEN O · CIK 0001279977 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 113,934

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094576 · tm2122379-7_4seq1.xml · nonDerivative · entry 2

Kenausis Gregory · CIK 0001590994 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,961

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094576 · tm2122379-7_4seq1.xml · nonDerivative · entry 1

Kenausis Gregory · CIK 0001590994 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,669

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094572 · tm2122379-5_4seq1.xml · nonDerivative · entry 2

Roth Johannes Minho · CIK 0001590334 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 228,070

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094572 · tm2122379-5_4seq1.xml · nonDerivative · entry 1

Roth Johannes Minho · CIK 0001590334 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 227,712

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094570 · tm2122379-4_4seq1.xml · nonDerivative · entry 2

Schneider Lucas P · CIK 0001702795 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,860

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094570 · tm2122379-4_4seq1.xml · nonDerivative · entry 1

Schneider Lucas P · CIK 0001702795 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,622

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094569 · tm2122379-3_4seq1.xml · nonDerivative · entry 2

Silver Jonathan M · CIK 0001745274 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,816

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094569 · tm2122379-3_4seq1.xml · nonDerivative · entry 1

Silver Jonathan M · CIK 0001745274 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,341

F1 · kind: Compensation awarded to directors pursuant to Plug Power's 2011 Non-Employee Directors Compensation Plan (the "Plan"). The issuance of common stock pursuant to the Plan was delayed due to the Issuer being delinquent in filing its periodic reports under the Securities Exchange Act of 1934, as amended, which reports have now been filed.

SEC source: 0001104659-21-094883 · tm2122379-1_4seq1.xml · nonDerivative · entry 3

Shrestha Sanjay K · CIK 0001775802 · Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 255,146

F4 · shares: Tendered to Issuer to satisfy tax withholding obligations of Reporting Person in connection with the Reporting Person's restricted stock unit award.

SEC source: 0001104659-21-094883 · tm2122379-1_4seq1.xml · nonDerivative · entry 2

Shrestha Sanjay K · CIK 0001775802 · Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 269,300

F2 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan effective as of June 9, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.19 to $28.70, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001104659-21-094883 · tm2122379-1_4seq1.xml · derivative · entry 4

Shrestha Sanjay K · CIK 0001775802 · Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F5 · derivative.exercise_date: On May 9, 2019, the Reporting Person was granted 150,000 restricted stock units, vesting in three substantially equal installments beginning on the first anniversary of the grant date. Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

F5 · derivative.expiration_date: On May 9, 2019, the Reporting Person was granted 150,000 restricted stock units, vesting in three substantially equal installments beginning on the first anniversary of the grant date. Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-21-094883 · tm2122379-1_4seq1.xml · nonDerivative · entry 1

Shrestha Sanjay K · CIK 0001775802 · Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 275,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit is the equivalent of one share of Plug Power Inc. common stock.

SEC source: 0001104659-21-027603 · tm217732-2_4seq1.xml · derivative · entry 1

Harriman Kim · CIK 0001847319 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,479

Underlying: Common Stock · 4,479 shares

Expires 2031-02-18

F1 · security: Options to purchase Common Stock granted in accordance with Plug Power's 2011 Non-Employee Director Compensation Plan.

F2 · derivative.exercise_date: This option shall become fully vested on the one year anniversary of the date of grant.

SEC source: 0001104659-21-006361 · tm213809-1_4seq1.xml · derivative · entry 11

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 466,668 shares

Expires 2027-08-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F10 · derivative.exercise_date: The stock option granted to the reporting person is fully vested and exercisable as of the date hereof.

SEC source: 0001104659-21-006361 · tm213809-1_4seq1.xml · derivative · entry 10

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 106,600 shares

Expires 2021-04-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · derivative.exercise_price: This option was previously reported as covering 1,066,000 shares at an exercise price of $0.61 per share, but was adjusted to reflect a 1-for-10 reverse stock split that occurred on May 19, 2011.

F9 · shares: This option was previously reported as covering 1,066,000 shares at an exercise price of $0.61 per share, but was adjusted to reflect a 1-for-10 reverse stock split that occurred on May 19, 2011.

F10 · derivative.exercise_date: The stock option granted to the reporting person is fully vested and exercisable as of the date hereof.

F9 · derivative.underlying_shares: This option was previously reported as covering 1,066,000 shares at an exercise price of $0.61 per share, but was adjusted to reflect a 1-for-10 reverse stock split that occurred on May 19, 2011.

SEC source: 0001104659-21-006361 · tm213809-1_4seq1.xml · nonDerivative · entry 9

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 748,680

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.26 to $68.43, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001104659-21-006361 · tm213809-1_4seq1.xml · nonDerivative · entry 8

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 753,858

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.26 to $68.2504, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001104659-21-006361 · tm213809-1_4seq1.xml · nonDerivative · entry 7

Marsh Andrew · CIK 0001431827 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 855,624

F1 · kind: Shares sold pursuant to a pre-established 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.26 to $67.25, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.